Log Message:
PR/50771: Update security/keepassx to 2.0.2.

2.0.1:
- Flush temporary file before opening attachment. [#390]
- Disable password generator when showing entry in history mode. [#422]
- Strip invalid XML chars when writing databases. [#392]
- Add repair function to fix databases with invalid XML chars. [#392]
- Display custom icons scaled. [#322]
- Allow opening databases that have no password and keyfile. [#391]
- Fix crash when importing .kdb files with invalid icon ids. [#425]
- Update translations.

2.0.2:
- Fix regression in database writer that caused it to strip certain special
  characters (characters from Unicode plane > 0).
- Fix bug in repair function that caused it to strip non-ASCII characters.